Ключевые слова: blast, boulder, coal, cobblestone, concrete, construction, crushed, digging, dump, earth, engineering, excavation, extraction, facility, factory, fossil, geology, granite, gravel, ground, heap, heavy, industry, limestone, manufacturing, material, metallurgy, mine, mineral, mining, mountain, open, ore, pebble, pile, pit, plant, processing, production, quarry, raw, resource, rock, sand, sandstone, site, stack, stockpile, stone,